Layer 2 Switching Commands 394
Default Configuration
There is no default configuration.
Command Mode
All modes, including Config mode and all config submodes.
User Guidelines
The show interface command shows the actual operational status of the
interface, which is not necessarily the same as the configuration.
Input/output rate statistics are collected every 10 seconds.
The link status field shows the hardware status followed by the keepalive
status. The hardware status show “Up” when link is detected, “Down” when
no link is detected, “Err-disable” when the port is error-disabled, and “Shut”
when the port is administratively shut down.
The keepalive status shows “None” when keepalives are disabled or the port is
down, “Up” when keepalives are enabled and no loop is detected and “Down”
when keepalives are enabled and a loop is detected. Some example values are:
Link Status : ................................. Up/Up
Link detected, keepalives enabled, no loop detected
Link Status : ................................. Shut/None
Port is administratively disabled
Link Status : ................................. Down/None
No link detected
Link Status : ................................. Err-disable/Down
Interface is error disabled due to loop detection
Link Status : ................................. Err-disable/None
The interface is error disabled due to a cause other than loop detection/
The err-disable cause field can take any of the following values:
• None – interface is not error disabled
• ARP Inspection – ARP inspection detected invalid ARP
• BPDU Guard – BPDU detected on access port
• Broadcast Storm – broadcast storm detected
• BPDU Storm – BPDU storm detected
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